SriLankaLichens_Book_eng - page 40

40
128
Mainly growing on
bark. Asci with ocular
chamber surrounded
by ring-like wall
thickening
129
129 Mature spores
colourless 130
129 Mature spores brown 131
130
Spore septa thin, the
lumina angular. Asci
with thin apical wall
Porina spp.
130
Spore septa thick, the
lumina rounded. Asci
with thickened apical
wall
Trypethelium spp.
131
Spores transversely
septate to muriform,
with thickened septa
and rounded lumina
Pyrenula spp.
131 Ascospores muriform,
with thin septa
Anthracothecium
spp.
132 Apothecia lirelliform,
much longer than wide 133